Fire-alarm box.



E. TOKARSKI.

FIRE ALARM BOX.

APPLICATION FILED 6.2711915.

1,176,499. Patented Mar. 21,1916.

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E. TOKARSKI FIRE ALARM BOX.

APPLICATION FILED Aus.27, 1915.

1,176,499. Patented Mar. 21, 1916.

3 SHEETS-SHEET 2- Tm: COLUMBIA PLANOGRAVH c0. wAsluN'roN, D. c.

E. TOKARSKI.

, FIRE ALARM BOX.

APPLICATION FILED AUG.27. I915. 1,176,499, 1 Patented Mar. 21, 1916.

A 3 SHEETS-SHEET 3. Fgn5 box until released by some authorized personanism for preventing the turning in of false fire department.

EDMUND TOKARSKI, OF PITTSBURGH, PENNSYLVANIA.

FIRE-ALARM BOX.

Specification of Letters Patent.

Patented Mar. 21, 1916.

' Application filed Au ust 27, 1915. Serial No. 47,646.

To all whom it may concern .Be it known that I, EDMUND ToKARsKr, subjectof the Emperor of Austria-Hungary, residing at Pittsburgh, in the countyof Allegheny and State of Pennsylvania,

have invented certain new and useful Imnection with the fire alarmsystem which is used in cities, and whereby the hand of theperson'sending in the alarm is locked to the connected with the firedepartment.

A further object of the device is to provide an automatic arm-graspingmeans in connection with a fire alarm box and whereby a person sendingin an alarm is made a prisoner so that upon the arrival of the firedepartment the existence or location of the fire maybe accuratelyascertained. r

A still further object is to provide'a mechfire alarms in a city alarmsystem by reason of the fact that the operator of the alarm isheld aprisoner at the alarm box.until his release'by an oflicer upon thearrival of the With these general objects in viewand others that willappear as the nature of the invention is better understood, the sameconsists in the novel combination and arrangement of parts hereinaftermore fully described, illustrated in the accompanying drawings, andpointed out in the appended claims.

In the drawings forming a part of this application and in whichlike-designating characters refer to corresponding parts throughout theseveral views, Flgure 1 1s a 7 top plan view of the device partiallybroken away. Fig. 2 is a longitudinal sectional View thereof taken uponline 11-11 of Fig.

'tially broken away. Fig. 5 1s a View similar 1. Fig. 3 is a horizontalsectional view taken'upon line IIIIII of Fig. 2 with the mechanism inits normal released position. Fig. 4 is a front elevation of the deviceparto Fig. 3, but with the mechanism in its sprung arm-engaging positionwith the electrio switch closed. Fig. 6 is a perspective viewof. one ofthe arm-engaging members. Fig; 7 is a-perspective view of the lockingslide employed with the arm-engaging member. Fig. 8 is a sectional viewthrough the arm-engaging member with the operating finger broken awayand with the slide illustrated by dotted lines in its locking position.Fig. 9 is a perspective view of the reset mechanism detached, and Fig.10 is a similar view of the electricswitch of the alarm box.

Referring more in detail to the drawings, a fire alarm box 10 isillustrated of substantially the usual size and having a swingmg forwarddoor 11 adapted to be readily opened by anv person desiring to send inan alarm. The electric switch of the fire alarm system is positionedwithin the said box upon a bracket 12 and consists of an angular switcharm 13 pivoted to the said bracket as at 14 and having a contact 15adapted to make electric connection with an opposite contact 16 mountedupon the said bracket 12, while the circuit wires 17-and 18 of the alarmsystem are connected re spectively to the said terminals 15 and 16.

Arm enga ing members 19 of the form bestillustrated in Fig. 6 and beingright-' tom of the box 10. The said arm engaging.

members 19 are provided with plates 21 adapted to overlap as bestillustrated in Fig. 3 of the drawings when the device is in itsoperative position and at which times the arm-engaging plates 22 will beoutwardly extended in parallel relations, thus allowing the hand of theoperator to be inserted upon opening the door 11 so as to push againstthe plates 21 and tilt the members 19 upon their pivots until the plates22 are in a single plane and the wrist of the operator is positionedthrough a central opening in the said plates formed by the U-shapedcut-away portions 23 thereof.

' cent faces of the plates 22 at substantially the plane of the trunnionpins 20 when the arm engaging members 19 are in their normal unlfckingposltions as shown 1n Fig. 3.

' The saidarms 31 are provided with rear extensions 36 and 37 which havea pin and slot connection 38. The said arm end 37 is pro vided with anangular extension 39 terminating in a head 40 adapted to be receivedwithin the central longitudinal slot ll of an angular end 42 of theswitching arm 13 when the electric switch is open and the said end 42 isslidably received and retained Within the slots 43 of an angular plate47lcarried by the bracket 12, the elements being arranged as illustratedin Fig. The opposite ends of the trunnion pins 20 which projectoutwardly of the sides of the box 10 have segmental racks {L5 inconstant mesh with each other and inclosed withln housings 16 carried bythe sides of the box.

The operator of the alarm pushes the plates 21' inwardly which operationshifts the member 21 to bring the openings 29 into receiving positionfor the fingers 30 of the arms 31., The arms 31 being thus released,

the springsi35 draw the said arms and their fingers 30 inwardly thusproiecting the said fingers 30 forcibly through the perforations 29 andagainst the springs 26 of the locking plates 24 as best illustrated inFigs. 5'and 8 of the drawings whereby the plates 24 are forced towardeach other into locking engagement with the hand of the operator. Duringthis operation, the head 40 of the arm '39 draws the switch 12 outwardlytocause the contact points 15 and 16 to engage and complete the circuitto'sound the alarm. The alarm having been thus turned in and the wristof the operator being retained by the locking plates 24, the firedepartment will respond to the alarm and upon reaching the box may beadvised as to the existence or location of a fire.

A resetting mechanism for the arms 31 is provided consisting of a leverpivoted as at 48 to a bracket 49 within the box 10 and lyingsubstantially parallel to theaforementioned bracket 12. The said leverhas a recessed end 50 adapted to engage over the lever 36 and force thelever end 39 inwardly so as to be readilv reengaged by the slotted end42 of the switch arm 13, and thus releasing the arm engaging members 19which may be readily swung to their open positions with the membersagain positioned as shown in Fig. 3, a lever 51 and en ec ng i k .5being empl y d o the said resetting lever 47. It is to be understoodthat a lock may be provided for the lev r-1 .1 if .clesired such a hasp53 and padlock 5i, although the location and operation ofthe said leverwill notbe atonce apparent to the operator of the alarm so that he willnot be advised as to the manner of releasing the retaining means for thelocking plates24.

While the form of the inyention herein shown and described is iwhatlis"believed to be the preferred embodimentthereof, it is nevertheless to beunderstoodthat minor. changes may be made thereiniwithoutide parting fthe p t and ssenele aainvention asclaimed. if

' lVhat I claim as new is.:: a 1. In combination wijh a this alarm boxhaving a front opening and ,provided with an electric switch therein,cooperating engaging members right-angular inlcios r section oppositelypivoted interiorly elf-the said box intermediate the said opening and:switch, slidable Wrist-engaging plates lied y S arm e s giheni mli s,normal retracting means for Jt'hesaid Plates and automatic projectingfor the said p a p a s m taneously w th. the switch closing operation; i2. In combination ivith a fire alarm box]- having a front opening andprovided with an electric switch therein, coop atin'g engaging membersright-angular jinicross section oppositely pivoted interio rly v(if thesaid box intermediate the said opening switch, slidable wrist engagingplates i ricd by the said ,armeengagifigirieniheis, nor; 7 malretracting meansffor the saidplat p -pr s arms i t ted ithi e box andhaving angular fingers'in r M gag m ith th said; are sing members, andcooperative circuit ,clg n means carried by the switch .and arm 3. A'device of the class :de'scr prising a box havi "g a forward openingtherein, and an electric switch forsa fire la c c i P s on d inwardlythe an opening, arm engaging members oppos ely. pivoted Within the saidbox and hav ng angularl d'sposed plates, von of said plates beingadapted for overlapping tenant' when the said switch is .op.en, the:othe of said plates having cqasp aa "man ge; ing'cut-away portions.

LA devilefof the class described-pom prising a box havinga forwardopening therein, and an electric switch qr"' fi alarm circuit positionedinwardly of said opening, .arm engaging men'rbersoppol sitely pivotedwithin'tli'e said box and have ing angularly disposed plates; one ofsaid Pl s b pted o overlappi g itla fit tion when the said switch islopen, other of said plates having cooperating armen; ems at-W were ,kisf;

ing a box having a forward plates slidably positioned within the saidcut-away plates, normal retracting springs for the said locking plates,and automatic prO ecting means for the said locking plates operable whenthe said in the same plane.

5. A device of the class described comprisopening therein, and anelectric switch for a fire alarm circuit positioned inwardly of the saidopening, arm-engaging members oppositely pivoted within the said box andhaving angularly disposed plates, one of said plates being adapted foroverlapping relation when the said switch is open, the other of saidplates having cooperating arm-engaging cut-away portions, wrist lockingplates slidably positioned Within the said cut-away plates, normalretracting springs for the said locking plates, resiliently mounted armspivoted within the said box and having inturned fingerspositionablewithin the plane of the said locking plates when the locking plates areswung to a position in the same plane.

plates are positioned Copies of this patent may be obtained for fivecents each, by addressing the 6. A device of the class describedcomprising a box having a forward opening therein, and an electricswitch for a fire alarm circuit positioned inwardly of the said opening,arm-engaging members oppositely pivoted within the said box and havingangularly disposed plates, one of said plates being adapted foroverlapping relation when the said switch is open, the other of saidplates having cooperating arm-engaging cut-away portions, wrist lockingplates slidably positioned within the said cut-away plates, normalretracting springs for the said locking plates, resiliently m0unt edarms pivoted within the said box and having inturned flanges positionedwithin the plane of said locking plates when the locking plates areswung to a position in the same plane, sliding connections between therear ends of the said arms, and cooperative circuit closing meanscarried by the switch and arms.

In testimony whereof I aflix my signature.

EDMUND TOKARSKI.

Commissioner of Patents,

Washington, D. G.

